Correlation between electronic states of O, Cu, and Ba in several high-Tc superconductors
學年 76
學期 2
出版（發表）日期 1988-04-15
作品名稱 Correlation between electronic states of O, Cu, and Ba in several high-Tc superconductors
作品名稱（其他語言）
著者 Horn, S.; Cai, J.; Shaheen, S. A.; Croft, M.; 張經霖; Chang, C. L.; Boer, M. L. den
單位 淡江大學物理學系
出版者 College Park: American Institute of Physics (AIP)
著錄名稱、卷期、頁數 Journal of Applied Physics 63(8), pp.4193-4195
摘要 X-ray photoemission measurements of Y-, Sm-, Eu-, and Yb-based high-temperature superconductors show a clear correlation between Cu 2p satellite features, which previous work has shown are associated with materials which exhibit superconductivity, and a high-binding-energy peak in the O 1s spectrum. In samples with varying oxygen content the intensity of the Cu 2p satellites changes, reflecting the Cu valence which varies between 1 + and 2 + . The high-binding-energy O peak appears to track the Cu valence. This high-binding-energy peak may be indicative of the presence of O 2p holes, suggested in some models as necessary for superconductivity. The Ba 3d peak position also changes systematically with the Cu valence.
關鍵字
語言 en
ISSN 0021-8979
期刊性質 國外
收錄於
產學合作
通訊作者
審稿制度
國別 USA
公開徵稿
出版型式 紙本
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